SolverFactory (OptaPlanner distribution 7.20.0.Final API)

java.lang.Object
- org.optaplanner.core.api.solver.SolverFactory<Solution_>

Type Parameters:

Solution_ - the solution type, the class with the PlanningSolution annotation

Direct Known Subclasses:

AbstractSolverFactory
```
public abstract class SolverFactory<Solution_>
extends Object
```
Builds Solver instances.
To build an instance, use createFromXmlResource(String) or any of the other creation methods.
Supports tweaking the configuration programmatically before a Solver instance is build.

Constructor Summary

Constructors
Constructor and Description

SolverFactory()

Constructors
Constructor and Description
`SolverFactory()`

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`abstract Solver<Solution_>`	`buildSolver()` Creates a new `Solver` instance.
`abstract SolverFactory<Solution_>`	`cloneSolverFactory()` Build a `SolverFactory` quickly (without parsing XML) that builds the exact same `Solver` with `buildSolver()`, but can also be modified with `getSolverConfig()` to build a different `Solver` without affecting the original `SolverFactory`.
`static <Solution_> SolverFactory<Solution_>`	`createEmpty()` Useful to build configuration programmatically, although it's almost always recommended to instead load a partial configuration with `createFromXmlResource(String)` and configure the remainder programmatically with `getSolverConfig()`.
`static <Solution_> SolverFactory<Solution_>`	`createEmpty(ClassLoader classLoader)` See `createEmpty()`.
`static <Solution_> SolverFactory<Solution_>`	`createEmptyFromKieContainer(org.kie.api.runtime.KieContainer kieContainer)`
`static <Solution_> SolverFactory<Solution_>`	`createEmptyFromKieContainer(org.kie.api.builder.ReleaseId releaseId)`
`static <Solution_> SolverFactory<Solution_>`	`createFromKieContainerXmlResource(org.kie.api.runtime.KieContainer kieContainer, String solverConfigResource)`
`static <Solution_> SolverFactory<Solution_>`	`createFromKieContainerXmlResource(org.kie.api.builder.ReleaseId releaseId, String solverConfigResource)`
`static <Solution_> SolverFactory<Solution_>`	`createFromKieContainerXmlResource(String solverConfigResource)` Uses `KieServices.getKieClasspathContainer()`.
`static <Solution_> SolverFactory<Solution_>`	`createFromXmlFile(File solverConfigFile)`
`static <Solution_> SolverFactory<Solution_>`	`createFromXmlFile(File solverConfigFile, ClassLoader classLoader)`
`static <Solution_> SolverFactory<Solution_>`	`createFromXmlInputStream(InputStream in)`
`static <Solution_> SolverFactory<Solution_>`	`createFromXmlInputStream(InputStream in, ClassLoader classLoader)`
`static <Solution_> SolverFactory<Solution_>`	`createFromXmlReader(Reader reader)`
`static <Solution_> SolverFactory<Solution_>`	`createFromXmlReader(Reader reader, ClassLoader classLoader)`
`static <Solution_> SolverFactory<Solution_>`	`createFromXmlResource(String solverConfigResource)`
`static <Solution_> SolverFactory<Solution_>`	`createFromXmlResource(String solverConfigResource, ClassLoader classLoader)` See `createFromXmlResource(String)`.
`abstract SolverConfig`	`getSolverConfig()` Allows you to programmatically change the `SolverConfig` at runtime before building the `Solver`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SolverFactory
```
public SolverFactory()
```
- Method Detail
  - createFromKieContainerXmlResource
```
public static <Solution_> SolverFactory<Solution_> createFromKieContainerXmlResource(String solverConfigResource)
```
    Uses KieServices.getKieClasspathContainer().
    
    Parameters:
    
    solverConfigResource - never null, a classpath resource in the KieContainer as defined by ClassLoader.getResource(String)
    
    Returns:
    
    never null
  - createFromKieContainerXmlResource
```
public static <Solution_> SolverFactory<Solution_> createFromKieContainerXmlResource(org.kie.api.builder.ReleaseId releaseId,
                                                                                     String solverConfigResource)
```
    Parameters:
    
    releaseId - never null
    
    solverConfigResource - never null, a classpath resource in the KieContainer as defined by ClassLoader.getResource(String)
    
    Returns:
    
    never null
  - createFromKieContainerXmlResource
```
public static <Solution_> SolverFactory<Solution_> createFromKieContainerXmlResource(org.kie.api.runtime.KieContainer kieContainer,
                                                                                     String solverConfigResource)
```
    Parameters:
    
    kieContainer - never null
    
    solverConfigResource - never null, a classpath resource in the KieContainer as defined by ClassLoader.getResource(String)
    
    Returns:
    
    never null
  - createFromXmlResource
```
public static <Solution_> SolverFactory<Solution_> createFromXmlResource(String solverConfigResource)
```
    Parameters:
    
    solverConfigResource - never null, a classpath resource as defined by ClassLoader.getResource(String)
    
    Returns:
    
    never null
  - createFromXmlResource
```
public static <Solution_> SolverFactory<Solution_> createFromXmlResource(String solverConfigResource,
                                                                         ClassLoader classLoader)
```
    See createFromXmlResource(String).
    
    Parameters:
    
    solverConfigResource - never null, a classpath resource as defined by ClassLoader.getResource(String)
    
    classLoader - sometimes null, the ClassLoader to use for loading all resources and Classes, null to use the default ClassLoader
    
    Returns:
    
    never null
  - createFromXmlFile
```
public static <Solution_> SolverFactory<Solution_> createFromXmlFile(File solverConfigFile)
```
    Parameters:
    
    solverConfigFile - never null
    
    Returns:
    
    never null
  - createFromXmlFile
```
public static <Solution_> SolverFactory<Solution_> createFromXmlFile(File solverConfigFile,
                                                                     ClassLoader classLoader)
```
    Parameters:
    
    solverConfigFile - never null
    
    classLoader - sometimes null, the ClassLoader to use for loading all resources and Classes, null to use the default ClassLoader
    
    Returns:
    
    never null
  - createFromXmlInputStream
```
public static <Solution_> SolverFactory<Solution_> createFromXmlInputStream(InputStream in)
```
    Parameters:
    
    in - never null, gets closed
    
    Returns:
    
    never null
  - createFromXmlInputStream
```
public static <Solution_> SolverFactory<Solution_> createFromXmlInputStream(InputStream in,
                                                                            ClassLoader classLoader)
```
    Parameters:
    
    in - never null, gets closed
    
    classLoader - sometimes null, the ClassLoader to use for loading all resources and Classes, null to use the default ClassLoader
    
    Returns:
    
    never null
  - createFromXmlReader
```
public static <Solution_> SolverFactory<Solution_> createFromXmlReader(Reader reader)
```
    Parameters:
    
    reader - never null, gets closed
    
    Returns:
    
    never null
  - createFromXmlReader
```
public static <Solution_> SolverFactory<Solution_> createFromXmlReader(Reader reader,
                                                                       ClassLoader classLoader)
```
    Parameters:
    
    reader - never null, gets closed
    
    classLoader - sometimes null, the ClassLoader to use for loading all resources and Classes, null to use the default ClassLoader
    
    Returns:
    
    never null
  - createEmpty
```
public static <Solution_> SolverFactory<Solution_> createEmpty()
```
    Useful to build configuration programmatically, although it's almost always recommended to instead load a partial configuration with createFromXmlResource(String) and configure the remainder programmatically with getSolverConfig().
    
    Returns:
    
    never null
  - createEmpty
```
public static <Solution_> SolverFactory<Solution_> createEmpty(ClassLoader classLoader)
```
    See createEmpty().
    
    Parameters:
    
    classLoader - sometimes null, the ClassLoader to use for loading all resources and Classes, null to use the default ClassLoader
    
    Returns:
    
    never null
  - createEmptyFromKieContainer
```
public static <Solution_> SolverFactory<Solution_> createEmptyFromKieContainer(org.kie.api.builder.ReleaseId releaseId)
```
    Parameters:
    
    releaseId - never null
    
    Returns:
    
    never null
  - createEmptyFromKieContainer
```
public static <Solution_> SolverFactory<Solution_> createEmptyFromKieContainer(org.kie.api.runtime.KieContainer kieContainer)
```
    Parameters:
    
    kieContainer - never null
    
    Returns:
    
    never null
  - getSolverConfig
```
public abstract SolverConfig getSolverConfig()
```
    Allows you to programmatically change the SolverConfig at runtime before building the Solver.
    This method is not thread-safe. To configure a SolverConfig differently for parallel requests, build a template SolverFactory from XML and clone it cloneSolverFactory() for each request, before before calling this method.
    
    Returns:
    
    never null
  - cloneSolverFactory
```
public abstract SolverFactory<Solution_> cloneSolverFactory()
```
    Build a SolverFactory quickly (without parsing XML) that builds the exact same Solver with buildSolver(), but can also be modified with getSolverConfig() to build a different Solver without affecting the original SolverFactory.
    
    Returns:
    
    never null, often a different SolverFactory subclass implementation than this instance
  - buildSolver
```
public abstract Solver<Solution_> buildSolver()
```
    Creates a new Solver instance.
    
    Returns:
    
    never null

Class SolverFactory<Solution_>

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

SolverFactory

Method Detail

createFromKieContainerXmlResource

createFromKieContainerXmlResource

createFromKieContainerXmlResource

createFromXmlResource

createFromXmlResource

createFromXmlFile

createFromXmlFile

createFromXmlInputStream

createFromXmlInputStream

createFromXmlReader

createFromXmlReader

createEmpty

createEmpty

createEmptyFromKieContainer

createEmptyFromKieContainer

getSolverConfig

cloneSolverFactory

buildSolver